Monday, July 6, 2020

Climate change: Study reveals diminishing size of migratory birds in North America

Featured

SBP calls meeting of Bank Presidents, top builders on Naya Pakistan Housing Program

Governor State Bank of Pakistan (SBP) Dr. Reza Baqir called a meeting of Banks on Wednesday for deliberations on...

Trump attends a graduation ceremony for officers, amid disputes with the Pentagon

US President Donald Trump is taking part in a ceremony to hand over certificates at the prestigious West Point...

Malaysia: coordinating border controls to combat migrant smuggling

The Malaysia police announced their cooperation with the armed forces and other enforcement agencies in conducting coordinated border controls...
Zain Zubair
Zain Zubair
Zain Zubair is a staff writer for World News Observer. He is studying ACCA in Pakistan. Besides Accountancy and writing pieces, he loves cooking and nature photography. Zain has attended various modern journalism workshops. Contact: [email protected]

Since 1978, researchers have collected tens of thousands of migratory birds that died after hitting buildings in Chicago during the spring and autumn seasons and conducted a study that documented a staggering decline in size.

A study published on Wednesday involving 70,716 migratory birds that died between 1978 and 2016 in a collision in Chicago, the third largest city in the United States, found volumes have been dwindling since, but the width of the wings has increased.

The findings suggest that warmer climate is shrinking the size of certain species of migratory birds in North America and possibly around the world, the researchers cite the Burjuman rule, which suggests that individuals within a breed become slimmer in warmer areas and larger in colder regions.

“Findings suggest that warmer climate is shrinking the size of migratory birds in North America and possibly around the world”

The study focused on 52 species, most of which are sparrowhawks, breeding in cold areas in North America and spending winter in locations in southern Chicago. The researchers measured and weighed a group that hit the windows of buildings and fell to the ground.

Over the four decades of study, diminishing sizes were observed in all 52 species. Average body mass fell 2.6 percent and leg length decreased 2.4 percent. But the width between the two wings has risen 1.3 percent, possibly to enable birds to travel the long migration with their smaller bodies.

“This means that climate change seems to change the size and shape of these species”, said Brian Weeks, a biologist at the University of Michigan School of Environment and Sustainability and lead researcher in the journal Ecology Letters.

“Everyone really agrees that the climate is getting warmer”, said Dave Willard, director of honorary collections at the Field Museum in Chicago, who worked on measurements of all migratory birds.

Read also: Emperor Penguin disappears significantly from Antarctic Halley bay

Zain Zubair
Zain Zubair
Zain Zubair is a staff writer for World News Observer. He is studying ACCA in Pakistan. Besides Accountancy and writing pieces, he loves cooking and nature photography. Zain has attended various modern journalism workshops. Contact: [email protected]

Latest News

PIA flight from Toronto to Islamabad will operate on 5 July 2020

PIA flight from Toronto to Islamabad will operate on 5 July 2020. Another PIA flight will operate from Toronto...

Sacrificing role models of media

Remember Anil Datta, a gem of a reporter and guru of a sub-editor with the exemplary national spirit, foregoing job offers from the foreign...

Banks performance under SBP Rozgar Refinance Scheme supported by Government of Pakistan’s Risk Sharing Facility

On April 10, 2020 State Bank of Pakistan introduced a refinance scheme to provide concessional credit at 3% interest rate and generous repayment terms...

SBP calls meeting of Bank Presidents, top builders on Naya Pakistan Housing Program

Governor State Bank of Pakistan (SBP) Dr. Reza Baqir called a meeting of Banks on Wednesday for deliberations on the measures proposed by Naya...

China: The Indian army has breached its obligations and launched provocative attacks, causing casualties

Zhang said - in a statement this evening about the clashes between the Chinese and Indian border forces in the Galvan Valley region -...

Related News